Founder Directory
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Founders16
Known for these resultsRole63%Role is parsed from founder titles in yc.db. Known for 63% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company100%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 100% of these rows have at least one match.School38%School is matched from bios, case-sensitive for acronyms. 38% of these rows have at least one match.
- Ryan Nowicki Stewart@rywicksFounder/CEO · PennantS26Fintech · New York
- Tomas Taylor@0xtotaylorFounder/CTO · PennantS26Fintech · New York
- Ali Tabba@alitabba_Founder/CEO · GravyX26Fintech · San Francisco
- Oscar LevyFounder/CEO · River MarketsX26Fintech · San Francisco
- Tony YaminFounder/CTO · ConvictionS25Fintech · San Francisco
- Mohammad Eshan@eshannnnnnnnFounder/CEO · GhostEyeS25B2B · New York
- Connor JonesFounder/CEO · BitBoardX25B2B · San Francisco
- Shourya Lala@atShouryaFounder/CTO · Third ChairX25B2B · San Francisco
- Misha van BeekFounder · BayeslineS24Fintech · New York
- Sebastian JanischFounder/CEO · BayeslineS24Fintech · New York
- Elle SmythFounder · RetailReadyW24B2B · San Francisco
- Darshita Chaturvedi@darshitac_Founder · Adri AIW23B2B · San Francisco
- Salomon Serfati@SalomonSerfatiFounder · ChariotS22Fintech · New York
- Shourya Lala@atShouryaFounder/President · FelloW22Fintech · Bengaluru
- Abel RiboulotFounder · unSurveyW21B2B · San Francisco
- Andrej Zukov-Gregoric@andrejzgFounder · unSurveyW21B2B · San Francisco
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Ryan Nowicki StewartPennantFounder/CEOSummer 2026FintechNew York, United States2https://x.com/rywicksTomas TaylorPennantFounder/CTOSummer 2026FintechNew York, United States2https://x.com/0xtotaylorAli TabbaGravyFounder/CEOSpring 2026FintechSan Francisco, United States2https://x.com/alitabba_Oscar LevyRiver MarketsFounder/CEOSpring 2026FintechSan Francisco, United States2—Tony YaminConvictionFounder/CTOSummer 2025FintechSan Francisco, United States2—Mohammad EshanGhostEyeFounder/CEOSummer 2025B2BNew York, United States6https://x.com/eshannnnnnnnConnor JonesBitBoardFounder/CEOSpring 2025B2BSan Francisco, United States2—Shourya LalaThird Chair2× YCFounder/CTOSpring 2025B2BSan Francisco, United States8https://x.com/atShouryaMisha van BeekBayeslineFounderSummer 2024FintechNew York, United States3—Sebastian JanischBayeslineFounder/CEOSummer 2024FintechNew York, United States3—Elle SmythRetailReadyFounderWinter 2024B2BSan Francisco, United States12—Darshita ChaturvediAdri AIFounderWinter 2023B2BSan Francisco, United States3https://x.com/darshitac_Salomon SerfatiChariotFounderSummer 2022FintechNew York, United States24https://x.com/SalomonSerfatiShourya LalaFello2× YCFounder/PresidentWinter 2022FintechBengaluru, India24https://x.com/atShouryaAbel RiboulotunSurveyFounderWinter 2021B2BSan Francisco, United States8—Andrej Zukov-GregoricunSurveyFounderWinter 2021B2BSan Francisco, United States8https://x.com/andrejzg
Showing 1–16 of 16 founders
Antonin Parrot
Founder/CTO·River Markets
PRIMARY INFO
RoleFounder/CTO
Team size2
BatchSpring 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Co-founder of River Markets, the prime broker for prediction markets. I have a background in engineering and CS, and I've been working as a quant at a high frequency option market making trading shop.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
No notable employer or school mentioned in the bio.
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
River Markets
Prime brokerage for prediction markets
IndustryFintech
Websiterivermarkets.com
Team size2
LocationSan Francisco, United States
BatchSpring 2026
Co-foundersOscar Levy
